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These two cassettes provide four music channels. The
cassette tapes are used alternately. When one is
playing the other one rewinds in order to give
continuous play.
Both reproducers are controlled from the audio module
fitted in the FAP.
The PRAM is automatically initialized at aircraft power
up when the reproducer receives 115 VAC.
The PES audio reproducer is powered when the PES ON/OFF
pushbutton is selected on the audio module in the FAP,
through relay 800MK.
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PRERECORDED ANNOUNCEMENTS AND BGM OPERATION
During the initialization, the Light Emitting Diode
(LED) display on the audio module is not shown.
The least significant digit LED of the announcer
display on the audio module in the FAP will show "O"
when the initialization is complete.
The operation procedures to program and play the
announcements are controlled via keys on the audio
module in the FAP:
ENTER
When the ENTER pushbutton is pushed, the cursor moves
into the MEMO 1 position.
The required message is keyed-in on the keyboard and
appears on the MEMO 1 display. When the ENTER
pushbutton is pushed, the keyed-in data is accepted.
The READY light comes on when the PRAM has found the
corresponding announcement.
The required messages for the MEMO 2 and 3 displays
are keyed-in the same as for the MEMO 1 display.
The messages keyed-in into the MEMO 1, 2 and 3 display
are alternately played from tape deck A and B.
CLEAR
When the cursor has moved into the related position
(MEMO 1, 2 or 3) and the CLEAR pushbutton switch is
pushed, the display clears.
START NEXT
When the START NEXT pushbutton switch is pushed the
message shown on the MEMO 1 display moves up to the
’ON ANNOUNCE’ display. The MEMO 2 display message then
moves up to the MEMO 1 display. The message shown on
the MEMO 3 display moves up to the MEMO 2 display.
START ALL
All messages keyed on MEMO 1, 2 and 3 will be announced
continuously until the last announcement has finished.
STOP
When the STOP pushbutton switch is pushed, the message
announcement stops immediately.
The BGM from the PRAM or the PES audio reproducer,
when it is installed, is controlled from the audio
module in the FAP with the following keys:
- ON/OFF, SEL and VOLUME.
ON/OFF
When the ON/OFF pushbutton switch is pushed, the light
in the pushbutton switch comes ON. Channel 1 is
automatically displayed on the BGM channel display.
When the ON/OFF pushbutton is pushed again, the light
goes OFF.
SEL
When the SEL pushbutton switch is pushed, the system
selects one of the available channels.
These are displayed in a numerical ascending code (four
channels in the mono mode, two in the stereo mode).
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PRERECORDED ANNOUNCEMENTS AND BGM OPERATION (CONT’D)
VOLUME
The LEDs on the volume display show the volume level
(2 dB steps).
When the (-) pushbutton switch is pushed the volume
level decreases.
When the (+) pushbutton switch is pushed the volume
level increases.
OPTIONS
The No Smoking and Fasten Seat Belt announcements can
be stored in the PRAM and can automatically be
broadcast through the PA system in the cabin when the
No Smoking and Fasten Seat Belt switches are set to
AUTO position in the cockpit, and the landing gear
and/or flaps/slats conditions are met.
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